Home / 15,174.11-20,940.36-8,460.16

Finding the Fourth Proportional to 15,174.11, 20,940.36 and 8,460.16

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Solution

The fourth proportional to 15,174.11, 20,940.36 and 8,460.16 is: 11,675.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,174.11 : 20,940.36 = 8,460.16 : x
  2. Step 2: Convert to fraction form
    15,174.11/20,940.36 = 8,460.16/x
  3. Step 3: Cross multiply
    15,174.11x = 20,940.36 × 8,460.16
  4. Step 4: Simplify right side
    15,174.11x = 177,158,796.06
  5. Step 5: Solve for x
    x = 177,158,796.06/15,174.11
  6. Step 6: Final answer
    x = 11,675.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.